Charles, Duke of Brittany Duke of Brittany (1319-1364) (1319–1364) Parents Margaret of Valois, Countess of Blois Guy I, Count of Blois Children John I of Blois-Châtillon Margaret of Châtillon Marie of Blois, Duchess of Anjou Siblings Louis II, Count of Blois Mary of Chatillon Partners Joan, Duchess of Brittany
